import { asyncRouterMap, constantRouterMap } from '@/router'
import {getSysMenuList} from '@/api/sys/menu'
import generaMenu from '@/utils/MenuUtils'
/**
 * 通过meta.role判断是否与当前用户权限匹配
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta && route.meta.roles) {
    return roles.some(role => route.meta.roles.indexOf(role) >= 0)
  } else {
    return true
  }
}

/**
 * 递归过滤异步路由表，返回符合用户角色权限的路由表
 * @param asyncRouterMap
 * @param roles
 */
function filterAsyncRouter(asyncRouterMap, roles) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (hasPermission(roles, route)) {
      if (route.children && route.children.length) {
        route.children = filterAsyncRouter(route.children, roles)
      }
      return true
    }
    return false
  })
  return accessedRouters
}

const permission = {
  state: {
    routers: constantRouterMap,
    addRouters: [],
    optionsPermission: []
  },
  mutations: {
    SET_ROUTERS: (state, routers) => {
      state.addRouters = routers
      state.routers = constantRouterMap.concat(routers)
    },

    SET_PERMISSION: (state, perms) => {
      state.optionsPermission = perms
    }

  },
  actions: {
    GeneratePermission({ commit }, param) {
      return new Promise((resolve,reject) => {
        getSysMenuList(param).then(response => {
          const data = response.data;
          if(data.code == 0) {
            let routers = [];
            generaMenu(routers, data.data);
            commit('SET_ROUTERS', routers);
            commit('SET_PERMISSION',data.perms);
          }
          resolve();
        }).catch(error => {
          reject(error)
        })

      })
    }
  }
}

export default permission
